Nondestructive determination of chloride concentration using Ag|AgCl electrodes produced by electrochemical anodization

Farhad Pargar, Dessi Koleva, Oguzhan Copuroglu, Eddie Koenders, Klaas van Breugel

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

The stability of chloride ion selective electrodes in highly alkaline solutions is an important aspect when reliability and feasibility within reinforced concrete applications are concerned. The sensitivity of these electrodes largely depends on the properties of the AgCl layer, including uniformity, porosity, orientation, thickness, etc. These can be varied for optimum performance through adjusting the current density and anodizing time. In this study the Ag|AgCl electrodes were prepared in four different current density regimes and the resulting microstructural properties of the AgCl layer were correlated to potentiometric response in chloride-containing solutions, including synthetic concrete pore solution and cement extract. It was found out that lower level of the current density within the anodization process results later on in increased sensitivity and stability of the electrodes..
Original languageEnglish
Title of host publicationXIII International Conference on Durability of Building Materials and Components
Subtitle of host publication(XIII DBMC)
EditorsM. Quattrone, V.M. John
Pages561-568
Number of pages8
Publication statusPublished - 2014
Event13th International Conference on Durability of Building Materials and Components - Milenium Convention Center, Sao Paulo, Brazil
Duration: 2 Sep 20145 Sep 2014
Conference number: 13

Publication series

NameRILEM Proceedings Pro
PublisherRilem
Number96

Conference

Conference13th International Conference on Durability of Building Materials and Components
Abbreviated titleDBMC 2014
CountryBrazil
CitySao Paulo
Period2/09/145/09/14

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